[lld] [llvm] [lld-macho] Clean up chained fixup entry emission (NFC) (PR #149483)

[Daniel Bertalan via llvm-commits]

BertalanD wrote:

Hm, I’m thinking about a different change that should go in first, but I haven’t fully decided yet. Marking this PR as a draft for now.

https://github.com/llvm/llvm-project/pull/149483